Road-culvert.



y use-fnl improvements in lIoad-Cnlverts, of

inter enlxerts roin|ni -e a pair offsenii-oylin-` drirztl Section thelongitud: al sides of.

j ot'l the enlvert tations hy rivets is -bjeetionahle tor the reaaonthat. it involves con- `snleralili; tune and is onljt` nti'eoniplishedat the production ot' :ldevice provided with .menne for ehunping thesides of theseet'ions together and wheurf.) clamped to be pmi- `tivelyheld against aceidental diengage- *nothing to thtl cost ot' sectionalenlverts now j and minor detail 0i' the device may he made.

" 'UNiirEn eineensv Vintrnist-fr oFEioE. g

ROAD-CULVERT.

t-VILLIAitP. Looitnii.;y 0F PURTLAND, OREGON.

f kSpecification of Letters Patent. Pun {ci} tcd S( 'Ii1.ff V 21's, 19MLAtiplcation tiled April 8v.` 1910. i Serial No. 554219. A* .t

To all -whmnit'may concern: y

Beit known thatVv lflViLLm. l". Loenen,v a citizen `ot" the lfnitetlStates, residing atv Portland` in the munir of Mnltnonxah and l@tate ot()regon have invented new and which the tollo\\'in;, r i aspeeitifation. l

'this invention relates to improvements in road zrnlverts and moreparticularly to that', type of road cnlverts known as nesting'enlverte,` 1 .'.f 1 It is well-knmvn that the lriual road neetwhieh areriveted or otherwie secured hetnre orai'ler the eulvert ha leenplaced inposition. The method ot Joining the Sides :xn increased cost. u Y

The yprt-sentinvention therefore aims at;

inuit. l

A further ultiem is the, pro\'i;-iou of a con- .strnr-tion wlnvh willadd roniparatively in use.v v

With these and Aother ohjerts in View, which will more fully hereinafterappear, the present invention consi in certain nov'el details ot'Construction and arrangement of parts, hereinafter fully described.illustrated in the arcomt'ianyingr,drawings and more .partieularlypointed ont in the :rppended eluims; it. being' understood that:vnrionsl changes:v in the forni, iropihtion, '.Qize,

The culvert Set-tions are designated respetjrtively bj' the numerals 5and t, and are eheh preferably formed of a single piece of hsheet metal:tud are-substantially arcuate or .senii-CviindrienlV incross set-tion.so that when hronggjhttogether with their longitu- (linut Sidestieni-irgone upon fthe other a eir-l t 'l enlnr opening will-hepresented.

A@ Shown in the'ilrawings the sections are f torinelot eorrug'ated sheetlnetnh ,lt must;

he limiet-.stood however that l ain not to he .limited tothe spefitie.employment-of corrugated metal. ainceit wilhhe understood, from whatwill appear later, how the device might he equally :is well constructedof seetions with Smooth snrt'ures.

By referenre to the drawings it will lie seen that the section is proiided for the greater portion of its length with what will subeeqnentlybe termed a pair of clamping strips designated by the numerals' and 8.These members are preferably formed of sheel metal and may he corrugatedor smooth according to the section to whih the7 are. to be applied. Theclamping' strips 7 and S are secured to the outer face of the.

'section a1nl.;ulja 1eixt to the longitudinal edges thereof. The strips7 and S Correspond approxinnitely in length to the section 5and*are-relatively narrow and secured to the section 5 hy virtue otirivets other suitable fastening inean. B v reference now to thetdrawingsit will he seentluxt the strips are so positioned that their outerlongitudinal sides will extend considerably in ath-'ance of thelongitudinal sides of the sec tion 5, and at the longitudinal centers,the strips arer offset as shown at 10, whereby Sockets ll are formedbetween the inner faces of the otlaet portions and Outer tace of theSection which these ollnet portions overlie. lt might here he statedthat the long-itiulinal central line of each strip is positioned aslight distance from the adjacent side edge of the section 5. TheSockets ll are ot' Snltieient width to receive the opposite sideportions of the opposite Sei-tion .6. when the said Sides are broughtinto alinernent with the socket?, and the sections brought togetheruntil the shonliflers formed bv the. oisets 10 ahnt with thelongitudinal edges of the section (i. It will be Seen when the parts areso positioned thaty the Sections `.vill be locked together and acircular open ing presented. V

In order to prevent accidental displacerient of the sectons after theyhave been united in the manner just describedthe folow-ing constructionis employed: By reference now to the drawingsit will'be seen that ormedat spaced intervals on the portions of the clam ing strips 7 spaced fromthe section 5 a'n adjacent to the outer edges of these strips areyoblong slots'v12 and formed on the outer surface and adjacenttotheopposite sides of the section 5' are spurs or teeth 13. AThe. Auppersideszof the spurs or teeth 125 incline toward theedgeof the section sothat when the sections arc 'being forcedti'nto engagement with eachother, by virtue of the inclined sides,` no obstructions will bcpresented toy prevent the edges of the sections G from ycntcring'thesocketsill. rI`he teeth'l'3 arc 'so positioned with respecttotheopenings 12 that during the operation of orcing the sectionsinto`engagcmentwth each other the slant sides of these teeth will forcethe clamping` strips 7 and 8 outwardly until the edges of the section Gabut with the shoulders formed by the oifsets 10, when the ends of theteeth will be in `alincn'lent with the oblong slots 12 whereby the outersides of these slots will engage with the ends of the teeth and preventoutward movement of the section 6 from the sockets 11.

In the modiied'form shown in FigJS the sections 14 .and 15 are identicalto the sections just. :described` The diiterence oetween the structuresresiding in the dis osition of the strips 16 and 17 which insteadofbeing located -on one sectiqpv as shown in I"igs.'1 and 2, arelocatedat lone side of each section.,r In some instances this `structuremay be preferred to that shown in Figs. 1 and 2 and if desired the edgesof these strips need4 not extend beyond a point in alinement with theedges of the sections to which they are secured, The stripsr 16 and17-are provided with openings, similar to the openings 12 and one ofwhich is shown in Fig. 3 and designated by the numeral 18, theseopenings receiving the spurs of teeth 19 in the manner before described.

Thus it will be seen that I have rovdedV tween the said stripsandrst-nained section and providedv with teeth to ings of the said stri s.Y

A In 'a .nestablc culvert, an oblong semicylindrical section, apair ofoblong stri s secured adjacent to the opposite sides of said section.and having oii'setporticns spacedv froml the (interface namedVscnii-cylixulrical' section having its opposite side portion inscrtibleinto the space between the offset portions of said strips andfirst-named section, andineans y forautomatically locking the twosections together. 3. In a nestablc culvert, a cylindrical pipe formedoftwo sections, one of which hasa enter the open recess along one of thelongitudinal edges thereof, and means for automatically locking one ofthek longitudinal edges'of the oppositc section thereto; n f y 4, Anestable. culvert comprising a pairof sections one of which has amarginal Asocket to receive a'n adjacent edge portion of the othersection, and coperatin device arranged on both sections serving toautomatically lock .the sections when the* same are brought together. yIn testimony whereof I afiixmy' signature in presenceof two witnesses.

` W'ILLIAM F. LOOKER. v lVitnessem e A. C. CURNow,

S. A. MCCARTNEY.

thereof,.and a second

